IPC-TM-650 EN 2022 试验方法.pdf - 第595页
IPC-2-5-15-2 Figure 2 Connection of Copper Wire IPC-TM-650 Number 2.5.15 Subject Guidelines and Test Methods for RFI-EMI Shielding of Flat Cable Date 10/86 Revision A P a g e5o f5 电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
IPC-2-5-15-1
Figure
1 Shielding Effectiveness Test Setup
IPC-TM-650
Number
2.5.15
Subject
Guidelines
and Test Methods for RFI-EMI Shielding of Flat Cable
Date
10/86
Revision
A
P
age4of5
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
IPC-2-5-15-2
Figure
2 Connection of Copper Wire
IPC-TM-650
Number
2.5.15
Subject
Guidelines
and Test Methods for RFI-EMI Shielding of Flat Cable
Date
10/86
Revision
A
P
age5of5
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
1
Scope
This
test method is designed to determine both
the volume (cross-sectional) and surface electrical resistance
of the dielectric material under humid conditions.
2 Applicable Documents
ASTM-D-257
DC
Resistance or Conductance of Insulating
Materials
3
Test Specimens
At
least two specimens 10 cm x 10 cm
x thickness.
4
Apparatus
4.1 Chamber
A
test chamber capable of maintaining a
combination of 35°C ± 2°C and 90% -0, +5% relative humid-
ity (RH).
4.2
Drying Chamber
A
chamber capable of maintaining
80°C.
4.3
Meter
A
Keithly model L-7 megohmmeter, or equiva-
lent.
4.4
Miscellaneous
Desiccator,
silver paint, conductor
composition 4817 by DuPont Co. or equivalent, distilled water
source, calcium chloride desiccant, analytical balance. Fabri-
cation of a special test fixture (such as a Balsbaugh Fixture)
may be desirable if frequent testing is required.
5
Procedure
5.1 Sample Preparation for Volume Resistivity
5.1.1 Double Clad Laminate
Prepare
etched conductor
test specimens in accordance with Figure 1 for one side and
Figure 2 for other side using standard commercial practices.
Immerse each specimen in distilled water for 24 hours at 23°C
± 2°C, then dry in oven for two hours at a temperature
between 49°C and 60°C.
5.1.2
Single Clad Laminate
Prepare
test specimens by
etching the foil, single clad laminate per Figure 1, then clean (if
etched) by immersion in distilled water for 24 hours at 23°C ±
2°C, then dry in oven for two hours at a temperature between
IPC-2517-1
Figure
1 Volume and Surface Resistivity Test Pattern.
(Side 1)
IPC-2517-2
Figure
2 Volume and Surface Resistivity Test Pattern.
(Side 2)
The
Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062
IPC-TM-650
TEST
METHODS MANUAL
Number
2.5.17
Subject
Volume
Resistivity and Surface Resistance of
Printed Wiring Materials
Date
5/98
Revision
E
Originating Task Group
Flex Peel Strength Test Methods Task Group
(D-13A)
Material
in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
P
age1of2
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ